CRUSTACEA DECAPODA— BORRADAILE. 



103 



is possible. As they have not the characteristic hooked hairs of the Maiidae, it cannot 

 be their practice to cover themselves with sessile organisms. Nor is the textm-e of 

 their carapace that of a weed- or sponge-haunting crab. In that respect they are far 

 more like the sand- and mud-dwelling Oxystomes or Parthenopids, which they also 

 resemble not a little in the shape of their chelipeds, while the forepart of the carapace 



Fig. 13. — Echinomaia Mspida, n. sp. Male, X 3. 



is strongly reminiscent of the snout-like region that Leucosia thrusts up to the surface 

 of the sand. The kind of ground upon which specimens have been taken has not 

 always been recorded, but in the instances I have been able to trace it has always been 

 " mud " of some sort, except in the present case. The new crabs were taken by the 

 " Terra Nova" on "rock," but such a bottom often contains pockets of sand in which 

 a characteristic sand fauna lives. 



